a combining form meaning “pus,” used in the formation of compound words: pyogenesis.
Also especially before a vowel, py-.
Origin of pyo-
< Greek, combining form of pýon; akin to Latin pūs pus
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for pyo-
before a vowel py-
Word Origin for pyo-
from Greek puon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for pyo-
word-forming element meaning "pus," from comb. form of Greek puon "pus" (see pus).
Online Etymology Dictionary, © 2010 Douglas Harper
Medicine definitions for pyo-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.